Well, yea, the engineers are probably conservative with the break-in, because pushing the envelope doesn't apply here. There's also the other departments at a manufacturer who wants less unhappy customers and less warranty claims, so it's entirely possible they took the engineer's recommendations and doubled it.
There is a limit, though. Manufacturers also don't want customers who think it's a hassle to own their cars. This is why most of them have moved to 10k oil changes and no early first oil change. I remember the early transition period where one brand, which I no longer remember (might have been Honda?), specifically says in the manual that it has a special engine oil for the first 3000 miles that need to be changed early. People were arguing in the forums that the ensuing changes are only every 10k miles so it must be fine to wait until 10k for the first oil change, and that the engineers are overly cautious - worse, it's just a trick by the marketing department to satisfy customers who are still used to 3k oil changes. That thread went on *PAGES* and the entire episode struck me as being irrationally silly.
Just follow the manual - 1k miles isn't that much, why second guess?